Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Collaboration revenue	$ 351,367	$ 48,633
Operating expenses
Research and development	167,205	38,023	$ 10,170
General and administrative	45,785	21,640	4,438
Total operating expenses	212,990	59,663	14,608
Income (loss) from operations	138,377	(11,030)	(14,608)
Interest income and other, net	213	83	574
Income (loss) before income taxes	138,590	(10,947)	(14,034)
Income taxes	17,400
Net income (loss) and comprehensive income (loss)	$ 121,190	$ (10,947)	$ (14,034)
Net income (loss) per share attributable to common stockholders
Basic	$ 1.46	$ (0.51)	$ (1.39)
Diluted	$ 1.37	$ (0.51)	$ (1.39)
Weighted-average number of common shares used in computing net income (loss) per share attributable to common stockholders
Basic	82,820,037	21,592,441	10,091,100
Diluted	88,249,243	21,592,441	10,091,100